Two of Ajax's summer signings scored as last season's semifinalist opened its Champions League campaign by beating Lille 3-0 in Group H on Tuesday.

Netherlands international Quincy Promes opened the scoring in the 18th minute, Mexican midfielder Edson Alvarez doubled the lead five minutes after the break and defender Nicolas Tagliafico added the third in the 62nd as Ajax cruised to victory.

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Ajax's Quincy Promes, left, scores his side's first goal with a header during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Two of Ajax's summer signings scored as last season's semifinalist opened its Champions League campaign by beating Lille 3-0 in Group H on Tuesday.
Ajax's Quincy Promes, left, scores his side's first goal with a header passing Lille's goalkeeper Mike Maignan, right, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

But new signings Promes and Alvarez made sure they were not missed at the Johan Crujff Arena.
Ajax players celebrate after scoring their side's first goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Sergino Dest, the 18-year-old United States international who recently extended his contract with Ajax, made his Champions League group stage debut and was rarely troubled on the right side of defense.
Ajax's head coach Erik ten Hag, left gives directions to his players as Ajax's Sergino Dest, right, passes the ball during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Amsterdam police detained more than 300 Lille fans for public order offenses at a metro station near the Johan Crujff Stadium before the match started.
Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)
Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)
Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)
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Ajax's Quincy Promes, left, scores his side's first goal with a header during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Two of Ajax's summer signings scored as last season's semifinalist opened its Champions League campaign by beating Lille 3-0 in Group H on Tuesday.

Ajax's Quincy Promes, left, scores his side's first goal with a header passing Lille's goalkeeper Mike Maignan, right, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

But new signings Promes and Alvarez made sure they were not missed at the Johan Crujff Arena.

Ajax players celebrate after scoring their side's first goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Sergino Dest, the 18-year-old United States international who recently extended his contract with Ajax, made his Champions League group stage debut and was rarely troubled on the right side of defense.

Ajax's head coach Erik ten Hag, left gives directions to his players as Ajax's Sergino Dest, right, passes the ball during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Amsterdam police detained more than 300 Lille fans for public order offenses at a metro station near the Johan Crujff Stadium before the match started.

Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax sold the two biggest stars of last season's run to the semifinals, Frenkie de Jong to Barcelona and Matthijs de Ligt to Juventus, and was missing two more of last season's standouts through injury — attacking midfielder Donny van de Beek and right back Noussair Mazraoui.

Ajax's Quincy Promes, left, scores his side's first goal with a header during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Quincy Promes, left, scores his side's first goal with a header during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

But new signings Promes and Alvarez made sure they were not missed at the Johan Crujff Arena.

Promes capitalized on shaky defending to head home a cross by Tagliafico, Alvarez rounded off a long spell of Ajax possession by slamming a powerful shot past Mike Maignan in the Lille goal and Tagliafico headed a corner powerfully into the goal to seal the victory.

Lille at times looked dangerous, with speedy forwards Jonathan Ikone and Victor Osimhen a threat on the break, but both missed good chances and Jonathan Bamba blasted wildly over the bar after another swift counterattack.

Ajax's Quincy Promes, left, scores his side's first goal with a header passing Lille's goalkeeper Mike Maignan, right, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Quincy Promes, left, scores his side's first goal with a header passing Lille's goalkeeper Mike Maignan, right, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Sergino Dest, the 18-year-old United States international who recently extended his contract with Ajax, made his Champions League group stage debut and was rarely troubled on the right side of defense.

Despite coming within minutes of reaching the final last season, Ajax had to win two preliminary rounds to get back into the group stage of Europe's top club competition, beating PAOK Thessaloniki and APOEL Nicosia to earn a berth in Group H alongside Chelsea, Valencia and Lille.

Valencia beat Chelsea 1-0 at Stamford Bridge in the other group game Tuesday.

Ajax players celebrate after scoring their side's first goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax players celebrate after scoring their side's first goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Amsterdam police detained more than 300 Lille fans for public order offenses at a metro station near the Johan Crujff Stadium before the match started.

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Ajax's head coach Erik ten Hag, left gives directions to his players as Ajax's Sergino Dest, right, passes the ball during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's head coach Erik ten Hag, left gives directions to his players as Ajax's Sergino Dest, right, passes the ball during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)
Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Lille's Victor Osimhen jumps to keep the ball inside during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

 Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, left, celebrates with Ajax's Quincy Promes, center, and Ajax's Edson Alvarez, after he scored his side's third goal during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

 Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)

Ajax's Nicolas Tagliafico, center left, scores his side's third goal with a header, as Lille's Benjamin Andre, center right, jumps, during the group H Champions League soccer match between Ajax and LOSC Lille at Johan Cruyff ArenA in Amsterdam, Netherlands, Tuesday, Sept. 17, 2019. (AP PhotoPeter Dejong)